tcbtheorem：如何从定理名称中删除括号

Question

下面的代码将输出定理名称“plain”周围的括号。

\documentclass{article}
\usepackage{tcolorbox}
\tcbuselibrary{theorems}
\begin{document}
\begin{theorem}[theorem style=plain]{plain}{}
This is my theorem. \begin{equation*} a^2 + b^2 = c^2. \end{equation*}
\end{theorem}
\end{document}

我想删除这些括号。

https://ftp.jaist.ac.jp/pub/CTAN/macros/latex/contrib/tcolorbox/tcolorbox.pdf#page=379

Answer 1

\documentclass{article}
\usepackage{tcolorbox}
\tcbuselibrary{theorems}
\newtcbtheorem{theorem}{Theorem}{theorem style=plain,
         description delimiters none, % <-------------
         fonttitle=\bfseries\upshape,fontupper=\itshape,
         colframe=green!50!black,colback=green!10!white,
         colbacktitle=green!20!white,coltitle=blue!75!black
                                }{theo}
\begin{document}
\begin{theorem}{plain}{}
This is my theorem. \begin{equation*} a^2 + b^2 = c^2. \end{equation*}
\end{theorem}
\end{document}

Answer 2

\documentclass{article}
\usepackage{mathtools}
\newtheorem{theorem}{Theorem}
\begin{document}
\begin{theorem}Plain.
This is my theorem. 
\begin{equation*} a^2 + b^2 = c^2. \end{equation*}
\end{theorem}
\end{document}